Mm. Elhawary et al., CONSTRUCTION OF A CHARGED-PARTICLE IRRADIATION CHAMBER FOR THE USE WITH PLASTIC DETECTORS, Nuclear instruments & methods in physics research. Section B, Beam interactions with materials and atoms, 103(1), 1995, pp. 94-98
A simple sensitive charged particle irradiation chamber was designed a
nd constructed in our laboratory. A circular rotating table with six d
etector holders, is contained in the chamber. The rotation is controll
ed electronically via a stepper motor with a precision of 1.8 degrees.
The beam-to-detector direction is changeable with an angle less than
5 degrees. An alpha source is allowed to move vertically using another
stepper motor. The source-to-detector distance is determined with an
accuracy better than 1.0 mm. An energy monitoring system, composed of
a silicon surface barrier detector and a signal electronic system atta
ched to a PC is used for energy calibration. Chamber characterization
and its application in nuclear track registration are studied under di
fferent conditions. The energy resolution of CR-39 plastic detector ha
s been obtained at various alpha energies and etching durations. Resul
ts showed that good detector resolution could be achieved at high etch
ing duration.